<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>双飞翼布局</title>
    <style>
        body {
            min-width: 550px;
        }
        .main {
            width: 100%;
            height: 200px;
            background: #f1f11f;
        }
        .main-wrap {
            margin: 0 190px;

        }
        .left {
            width: 190px;
            background: lightblue;
            height: 200px;
            margin-left: -100%;
        }
        .right {
            width: 190px;
            background: lightcoral;
            height: 200px;
            margin-left: -190px;
        }
        .fl{
            float: left;
        }
    </style>
</head>
<body>
    <div class="main fl">
        <div class="main-wrap ">
            main
        </div>
    </div>
    <div class="left fl">left</div>
    <div class="right fl">right</div>
    
</body>
</html>